*{
    box-sizing: border-box;
    margin:0;
    padding:0;
}
.title,.container{
    width:585px;
    margin-left:calc(50% - 271px);
}
.title{
    margin-top:2rem;
}
.container{
    height:765px;
    margin-top:.5rem;
    background-color: black;
}
.td{
    width:15px;
    height:15px;
    float:left;
}
.orange{
    background-color:orange;
}
.green{
    background-color:rgb(48,123,47) ;
}
.bullet>.item{
    width:9px;
    height:9px;
    background:red;
    border-radius: 50%;
    margin:3px;
}
.wall1{
    background: rgb(171,73,7);
    border:2px solid rgb(238,133,51);
}
.wall2{
    background: rgb(242,240,245);
    border:2px solid rgb(77,80,80);
}